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ICD-10 Guide
ICD-10 CodesF44.9

F44.9

Billable

Dissociative and conversion disorder, unspecified

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 F44.9 is a billable code used to indicate a diagnosis of dissociative and conversion disorder, unspecified.

Key Diagnostic Point:

Dissociative and conversion disorders are characterized by a disruption in the normal integration of consciousness, memory, identity, or perception of the environment. These disorders can manifest as symptoms that affect motor or sensory functions, which cannot be explained by medical conditions. Patients may experience episodes of dissociation, where they feel detached from their thoughts, feelings, or sense of identity. Conversion disorder specifically refers to neurological symptoms that arise without a neurological basis, often triggered by psychological stressors. The unspecified designation indicates that the clinician has not provided enough detail to classify the disorder further. Symptoms can include paralysis, tremors, or non-epileptic seizures, and may co-occur with anxiety disorders, PTSD, or OCD. Treatment often involves psychotherapy, cognitive behavioral therapy, and anxiety management techniques to address underlying psychological issues and improve functioning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptom presentation and severity
  • Overlap with other mental health disorders
  • Need for comprehensive documentation to support diagnosis
  • Potential for misdiagnosis with neurological conditions

Audit Risk Factors

  • Inadequate documentation of symptoms and their impact
  • Failure to link symptoms to psychological stressors
  • Misuse of unspecified codes leading to denials
  • Inconsistent coding across providers

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed patient history, symptom description, and treatment plan.

Common Clinical Scenarios

Patients presenting with unexplained neurological symptoms or dissociative episodes.

Billing Considerations

Ensure thorough documentation of psychological assessments and any co-occurring disorders.

Neurology

Documentation Requirements

Comprehensive neurological examination and exclusion of organic causes.

Common Clinical Scenarios

Patients with conversion symptoms that mimic neurological disorders.

Billing Considerations

Document rationale for ruling out neurological conditions to support the diagnosis.

Coding Guidelines

Inclusion Criteria

Use F44.9 When
  • According to ICD
  • 10 guidelines, F44
  • 9 should be used when the clinician has determined a dissociative or conversion disorder but has not specified the type
  • Coders should ensure that the diagnosis is supported by clinical documentation and that other potential causes have been ruled out

Exclusion Criteria

Do NOT use F44.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes

Clinical Scenario

Used for ongoing therapy for patients with dissociative symptoms.

Documentation Requirements

Document the duration of the session and the focus of therapy.

Specialty Considerations

Psychiatrists should ensure that the therapy aligns with the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of dissociative disorders, improving the ability to capture the complexity of these conditions. However, it has also increased the need for detailed documentation to support the use of unspecified codes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of dissociative disorders, improving the ability to capture the complexity of these conditions. However, it has also increased the need for detailed documentation to support the use of unspecified codes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of dissociative disorders, improving the ability to capture the complexity of these conditions. However, it has also increased the need for detailed documentation to support the use of unspecified codes.

Resources

Clinical References

  • •
    American Psychiatric Association - DSM-5

Coding & Billing References

  • •
    American Psychiatric Association - DSM-5

Frequently Asked Questions

What are the common symptoms of dissociative and conversion disorders?

Common symptoms include memory loss, paralysis, non-epileptic seizures, and feelings of detachment from self or surroundings. These symptoms often arise in response to psychological stressors.